High repetition-rate sub-picosecond source of fibre-amplified vertical-external cavity surface-emitting semiconductor laser pulses

Elsmere, S.P., Mihoubi, Z., Quarterman, A., Tropper, A.C., Dupriez, P., Nilsson, J. and Roberts, J.S. (2007) High repetition-rate sub-picosecond source of fibre-amplified vertical-external cavity surface-emitting semiconductor laser pulses. Conference on Lasers and Electro-Optics (CLEO)-Europe/International Quantum Electronics Conference (IQEC) 2007, , Munich, Germany. 17 - 22 Jun 2007. 1 pp . (doi:10.1109/CLEOE-IQEC.2007.4386288).

Abstract

In this work we used a V-cavity VECSEL with InGaAs quantum-well-based gain and semiconductor saturable absorber mirror structures as described in S. Hoogland et al.(2005): an overall cavity length of 25 mm conferred a fundamental pulse repetition frequency of 5.9908 GHz, and the VECSEL emitted 1-ps pulses in a stable passively mode-locked train with 40 mW average power. Pulses from the VECSEL were then launched through a free space optical isolator into 2 m of Yb-doped fiber with an octagonal core and outer cladding diameters of 20 µm and 125 µm respectively (Liekki Yb 1200-20/125DC). The fiber was cladding-pumped by a 5-W fibre-coupled diode at 915 nm.

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Contributors

Author: J. Nilsson

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